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EF1 tornado in Cook County, Illinois

Tornado July 15, 2024 · Cook County, Illinois

EF1
Rating
2.1 mi
Path length
75 yd
Path width
EF0EF1EF2EF3EF4EF5Unrated

The path drawn at its surveyed width of 75 yards (0.04 mi) — zoom in and the swath grows to true scale. Other tornadoes recorded nearby that day are shown faint.

What EF1 means. On the Enhanced Fujita scale, EF1 is moderate damage: roofs badly stripped, mobile homes pushed off foundations or overturned, windows broken, consistent with estimated gusts of 86–110 mph. The rating comes from a survey of the worst damage after the storm, not from a wind measurement, so it says as much about what the tornado hit as about how strong it was.

What the National Weather Service wrote

A tornado with estimated peak winds of 90 mph touched down near the Chicago Sanitary and Ship Canal immediately north of Interstate 294. It moved across a mobile home park where it caused damage to trees and homes north of Park Avenue. The tornado crossed Garden Lane where several large, healthy trees were either uprooted or snapped. Minor shingle, siding and fascia damage to homes also occurred. A greenhouse was blown about 75 feet to the north. The tornado was likely at peak intensity in this area. The tornado continued through a cemetery and broadened considerably as it ended east of Roberts Road near 74th Place.

The wider storm

A derecho moved across northern Illinois during the evening of July 15th producing widespread wind damage and 30 tornadoes in northeast Illinois. One of these tornadoes crossed into northwest Indiana. At the height of the storms, 430,000 customers lost power with some power not restored for four days, on July 19th.

Began near Willow Springs (41.7513, -87.8573).

Other tornadoes from the same storm system

25 more tornadoes the National Weather Service filed under this storm episode.

EF2 Grundy CountyEF1 Kane CountyEF1 Kendall CountyEF1 Kendall CountyEF1 Cook CountyEF1 Cook CountyEF1 Cook CountyEF1 Kankakee CountyEF1 Will CountyEF0 Livingston CountyEF0 Winnebago CountyEF0 Ogle CountyEF0 Ogle CountyEF0 Ogle CountyEF0 Kane CountyEF0 Will CountyEF0 Du Page CountyEF0 Du Page CountyEF0 Du Page CountyEF0 Cook CountyEF0 Cook CountyEF0 Cook CountyEF0 Kankakee CountyEF0 Will CountyEFU De Kalb County

Source: NOAA Storm Events Database, event 1194272. Narratives are written by the National Weather Service forecast office that issued the report.

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